Insulator.



luiviriiii) STATESv PATENT oFFioE.

Louis STEINBERGE'R, oir-BROOKLYN, NEW YORK.

iNsULAToR.

Specification of Letters Patent.

Patented Oct. in, 1915.

Application tiled April i7, 1914. 4Serial No. 832,616;

To all fio/tom t may concern.'

Be it known that I, LOUIS Srniivnnonn, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful improvements in nsulators,.of which thefollowing is a specification.f v

This invention relates to an insulator con- "struction, and lthe principal object thereof is to providel an etlicient reliable structure adapted foi"use as a strain insulator, either for deadending or like purposes, or for a 4suspension insulator, and to render theparts thereof of such form as to be cheaply 'manufactured and assembled.

Another object is to Vimprove the construction of the strainmembers so that a series of insulators may be connected infehain` relation without the interpositioning of special connecting members, andto provide ample and eliicient protection for the strain members, `both mechanically and electrically,

4applied thereto, a brace'member extending between said strain members toresist the tendency of the U-sliaped member to movethe strain members toward each other.

A further object is to provide the brace member so as to afford a desired amount of jnjotection to the body of the insulator espelc ially from blows such as might be dealt 'upon the insulator byA a member held between the legs of the U-shaned member and subject to movement toward the body of the Akinsulatk'ir incident to handling of the 'insulatoii vor to violent sway thereof in a heavy wind, or to -other causes.

Ar` further 'object is to provide a brace member as a separately formed part held in position by the presence of the U-shaped member andbeing detachable when said U- v shaped member is removed. i i

A further object is to provide one or more' arcing members, preferably one at each side.

of the insulator and having metallic connection wit-li the strain members, and projecting laterally so as to dispose portions of themselves in position to coperate for giving definite direction to an arc which might occur across the insulator and which might otherwise be destructive to the insulator.

A further object is t0 provide means.'

whereby thearCingmembers are adjustable.

A furtherobject is to form at leastv one.,y of these arcing` members so that it will serve as a hood if desired, for protectingthe'insulator bodv, this object being particularly associated with the invention whenthe insula tor is used as a suspension insulator; and

A further object is to arrange the arcing members so that parts thereof will Ecomprise brace members above referred'te..y

Other objects and aims of the invention,V .more or less specific than those vreferred to above, will `be in part obviousfand viii part pointed out in the .course ofthe following description of the elements, combinations,-

arraugements of parts and applications Iof principles, constituting the invention.

In 'the accompanying drawings which lare y to'be taken as a part of this specification,

and in which I have shown a merely "preferred form of embodiment of the invention,

Figure l is a transverse, central,` sectional view through an insulator coiis'tructedin accordance with the provisions of this in'- vention: Fig. 2 is' a bottom plan view of the" structure illustrated in Fig. l; Fig. 3 is a fragmentary sectional view taken substantially upon lthe plane of line III-IH of .l

Fig. l; Fig. 4 is a nview similar to Fig. 1, but illustrating the invention as appliedto a lstrain type or dead-ending insulator, whereas the'structure in Fig. lis more particularly a suspension insulator; 4thouglinlof course this structure may be used as a st rainljl insulator also iffdesired. Fig; 5 is a side view of the structure shown in Fig. `4; and

Fig. 6 is a detail view.

Referring to the drawings for a' detailedhf `l description of the structure illustrated,A and particularly to the structure of Figsjl and 2, the refience character L indicates. gener-u ally a body of yinsulating material. 4 This.

ict;

may be Qf any preferred vshape ordesign but, for kuse preferably/formed with horizontal. disk or as a suspension insulatoiy,v isf-Ii 1 fiange l, said vdisk being `prefera biy smooth.v l* l uponv its upper surface, butinclining conf-' v insulated parts together.

tinuouslv downwardly from the central por'- tion of the body L to the outer periphery of the flange, so as to more readily shed water therefrom. A plurality of corruga tions or flanges 2 may be formed upon the lower surface of the disk for preventing creepage of moisture alonO said lower surface of the disk toward the central portion thereof, for increasing the insulating surface of the disk and for providing' protective portions.

The strain members are indicated by the reference characters Gr and l-l. These each comprise a closed loop or lol-shaped portion, and are linked through each other within the body L, being held by the material of said body in spaced relation from each other a suilicient distance to eifectually and completely electrically insulate them from each other, the body L being at the same time of proper proportions relatively to the size of the embedded portions of the strain members, so as to oder ample mechanical strength for resisting strains which may be applied to the strain members tending to move their The strain member G is provided with a closed eye G through which a supporting member may be inserted. The provision of this eye prevents the supporting means from ever coming in contact with the upper surface of the insulator during handling of the insulator and connecting it in the line. The strain member H is formed of two arts, an upper part 3 anda lower part il. he part 8 comprises a U-shaped metallic member having the connecting portion between its spaced. legs rigidlyembedded' within the body AL, and havino' its legs extending downwardly from the body L and through a pair of sleeves or extensions g'form'ed upon* the under-surface of the body, and being of Suth- Vcient length to reach to near the lower ends I of the legs. Adjacent'to vthe end of each of the legs, said legstgare formed lwith an annu-- lar flange 6 overlying and reinforcing the ends of the sleeves or extensions 5. The

- legs project beyond'the flange G, as at 7.

s vetted position, having its opposite legs dis? The lplart ilikewise comprises a li-shaped meta. 'cv-member, but is arranged in an inposed with their ends substantially abutting Irma f ner,

the projecting ends' 7 ofthe legs of the part. t

' The adjacent legs of the two parts 3 and be connected inl any approved inanut are preferably Aconnected by the means shown, which means consists of a threaded socket 8 formed upon one leg of the part r4 for engaging with threads provided upon the projecting part 7 of the adjacent leg ofthe part 3 by bodily interrotation betweensaid parts, and of a separately formed sleeve: 9 engaging threads upon the other leg of the part 4, and extending into engagement with threads provided upon the portion 7 of the remaining leg of the part 32 The sleeve 9 is rotatable to travel along the lee of the part -l to free itself from ene gagement with the threads of the part 7, so that the part l may be rotated bodily as suggested. i

The flange 6 upon one leg of the part 3 is engaged by the vupper edge of the socket d to limit movement of the socket in a position where the opposite leg of the part 4 is in a horizontal plane to properly engage with the remaining leg of the part 3. The flange 6 of said remaining leg of the part 3 serves to limit upward movement, of the sleeve 9, and to thereby determine the position of said sleeve for properly and uniformly engaging the adjacent legs of the parts 3 and it.

rlhe part 4 is bent abruptly at a point .slightly below the sleeve 9 so as to form a shoulder 1G with which said sleeve may engage to limit the downward'movement of the sleeve when the parts are being disengaged. The shoulder is preferably in such position to prevent downward movement of the sleeve beyond a point 'where the upper edge of the sleeve is substantially Hush with the upper end of the leg upon which it -is mounted.

y The connecting portionbetween. the legs of the part l is preferably bent into substantially V-shape, so as to provide a. centrally located positively defined seat 11 for engagement by a cable, or by a connecting member or link of another insulator. The central portion is prererably thickened, and the opposite sides of the V are tapered outwardly. By this means the spaced legs of the part 4 are more rigidly and permanently spaced, and are less liable to be drawn toward each other by strains applied within the seat 1l. 'lhe connecting portion between the legs of the part 3 is preferably formed on an are of a circle, so as to give it may be formedas an integral closed link,A

if preferred, according to convenience or requirement. The body portion L is prefela ablymrovided with a pair of sleeves 12 i1p standing therefrom, corresponding legs of the strain member G being extended through said sleeves and being provided with annular flange 13 engaging and remforcmg the upper ends of the sleeves in the vsameimanner as described for the sleeves 5. y

The insulating, 'material` employed in the structure illustrated is 'preferably Ele-zc In use, the operator, in order to open the strain member, h, has merely to rotate. the ysleeve 9 downwardly to the shoulder .10,

, and swing' thejpart 4- bodily about the vthreaded portion ofthe other leg of the part .'lVhen closing the strain member .he rotates the part 4L upwardly until rotation is 4arrested by engagemen-t of the socket 8 with theadjacent iiange 6 and return the sleeve 9 upwardly, the whole operation consuming very little timeand being positive throughout. Little or no dependence is made upon This structure, however, illustrates the manner of adapting these features to use as a spending with the sleeves 5 and 12 of Figs. 1

l proper distance from the arms 21 of the dead-ending-or strain insulator,tha.t is, an insulator intended to be used with the longin tudinal axes of the strain members eXtending in or near a-horizontal .plane yrather than in or near'a vertical plane, as with the structure above described. In these figures thelv .body portion L isshown vto be provided with an. annular disk or fiange 14 centrally dis posed between a pair of annular oppositely obliquely disposed flanges or collars-15 and 16. 4These projecting parts all increase lthe insulating surfacebetween the opposing strain members, and the flange or collar. 15 isf as effective for presenting a water-protectedsurface at one side of the body 'adjacent one of the strain members as is the flange or collar 16 for pre'sentingawaterprotected surface at the other side of the body adjacent the vother strain member while the -longitudinal axes of the strain members extend horizontally, as shown and described in my Patent No.'904,370. The sleeves`17. and 18 'of these figures, correand 2, project outwardly from opposite sides of the body L within the areas of the opposite. surfaces of the body defined by the flanges or collars 15 and 16, so that said flanges-or collars overlap said sleeves and serve to protectthem particularly from direct attack of falling rain.A

' InFig. 3 it will be noted that thecross bracelf) for forming the-closed eye G serves to positively prevent; movement'of the legs 4of the strain -members toward each other when 'strain is applied.' Within the eye. lVhere, however, the` strain member isof two parts, as? illustrated, thel saine resuit may vbe accomplished by tile presence of a cross brace, as 20, extending between the legs of the strain member' may be formed integra-l with the parts 8, and comprise continuations K.ofthefianges 6,

These braces if desired,.but they are preferably sepao rately formed and are apertured to telescope .over the portions 7 as indicated. `When the parts are assembled the brace is clamped rigidly between the flanges 6 and the upper ends ofthe socket 8 and sleeve 9. Its presenceprotects the body of the insulator from blows which might otherwise be dealt particularly by a su1'3porting member in the seat 11. It is also impossible for the legsoiE the VStrain member to move toward,l or away .v

from, each other and thus likelihoodl of fraotlreof the sleeves 5 is avoided.

lVhile the members 20, may: of course', each comprise simply a rectangular piece of 'material apertured at its opposite ends to serve no other purpose vthan to brace the legs of the strainmembers, it is preferable, however, to form the same-with arms 21 projecting laterally in various directions. Two such arms are' sufHcient, preferably vhowever four are employed and arranged as indicated.- rlhese project outwardly andmay be turned slightly away from or toward the insulator body so as to present relatively extensive surface ,portions `to the arms "as will. be readily understood from the drawings. The brace members 20, with their arms 21, thus may b e referred to as ar'cingmembers.

' lVhen the invention is used as a suspension insulator, as 1n Figsl to 3, the upper arcingmember is preferably formed into a hood shape, -as at 22, depending about the insulator'body so-v as to protect the same.

-The insulator body may be described. as

being nested within the arcing member 'or hood 22. The under surface portion of they arcing member or hood 22 is preferably shaped'to correspond to the upper surface portion of the body of the insulator and is spaced thereupon sofas to' provide an air space between the hood and the insulator of substantially uniform depth throughout. It

will, of course, be lunderstood that ithe lower annular edge of the hood 22-is spaced a will also be understood lthat the distance 120 f from' the lower annular edge of the hood 22 to theouter ends ofthe' arms'21, as indi- 'cat'e'd by line X, is less than the distance to the strainmembers, asindicated by the line Y. -Th'us an arc is induced to form between the hood andthe-arms 21, rather than di'- -rectly between the hood and the strain members. The destructive force of the arc is thus diverted to ground before reaching the insulating material, particularly of the sleeves through which the strain members pass.

The parts23 of the hood 22, being bent closely about the insulating sleeves, 'obing a seat serving as attaching means for theinsu ator, flangesw formed upon said legsI viously serve to reinforce said sleeves and of the strain member overlapping a portion protect them against hkelihood of injury. of said sleeves to protect said sleeves, a cross iis/suggested by the dotted lines in Fig. 1,

it is intended that the' arms 21 may be adjusted by bending or otherwise, to meet varying requirements. IThey may be made in any other desired shape, and also they may be'formed independently of the brace members 20, if desired, and be attached to the insulator structure in any approved Y manner.

As many changes could be made in this construction without departing from the scope of the following claims, it is intended that all"1natter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not a limiting sense. c

Having thus described my invention what I claim as new and desire to secure by Let-l ters Patent, is i g 1. An insulator formed of a body lportion of insulatingr material, a pair of spaced metallic parts projecting fron' one surface of said body porti ,n providing attaching means for the insulator, sleeves formed upon and projecting from said body portion through which Said metallic parts extend, a member extending between said metaliic parts U- shaped to form a single seat between the ends of said sleeves for attaching a support, and means for attaching a conductor to said insulator.

2. An insulator formed of a body portion of insulating material, a pair of spaced metallic arts projecting from one surface of said liody portion providing attaching means for the insulator, sleeves formed upon andA projecting from said body portion through which said metallic parts extend, said metallic parts having flanges adjacent their ends overlying the ends of said sleeves servingv to protect the ends of said sleeves, means connected to said metallic parts beyond the flanges thereon and extending therebetween so as to serve as a seat between saidnietallic parts for the attachment of a support, said seat forming means having portions to detachably engage over said metallic parts c. into engagement with said flanges whereby said seat forming means is rendered detachable, and means for attach-Y ing aV conductor to said insulator.

. 3. An insulator formed of a body portion bar extending between the legs of the connecting member to protect the surface of the insulator intermediate the sleeves, and a second strain member projecting from the opposite surface of the insulator.

4. An insulator formed of a body portion of insulating material, having a pair of sleeves formed integral therewith and projecting from one surface thereof, opposed U- shaped strain members partly embedded in said body portion, one of said strain inembers having its legs projecting outwardly from the body portion through said sleeves, means extending between and connecting said legs beyond said sleeves serving as attaching means for the insulator, and a ange projecting from said body portion surrounding said sleeves to protect said sleeves.

5. An insulator formed of a body portion of insulating material, a pair of spaced metallic parts projecting from one surface of said body portion providing attaching means for the insulator, sleeves formed upon and projecting from said body portion through which said metallic parts extend, a brace bar extending between said metallic parts adjacent-the outer ends of said sleeves, said brace bar being'spaced from the surface of the insulator body intermediate the sleeves.

and serving to protect said portion of the insulator body, and means for attaching a conductor vat the opposite surface of thebody.

An insulator formed of a body portion of insulating material, a pairrof spaced Inetallic `parts projecting from one surface of said body portion providing attaching means for the insulator, sleevesA formed upon and projecting from said body portion through which said metallic partsextend, a brace bar extending between said metallic parts adjacentlthe outer ends of said sleeves, a member connected to the projecting portions of said metallic parts'beyond said brace bar, saidrniember providing a seat intermediate the projecting portions of thel metallic parts within which aQsupportfor the insulator .may rest, said brace barvbeing disposed intermediate said seat and the adjacent surface of the insulator body but spaced from said surface of the insulator body to protect thesame, and means for attaching a conductor at the opposite surface of the body.

7. An insulator formed of a body portion 'i of insulating material, a pair of spaced Inetallic parts projecting from one surface of said body portion providing attaching means for the insulator, a separately formed brace bar extending between said metallic parts adjacent their outer ends, a seat forming member connected to the projecting portions of the metallic parts, engaging said tachment of a support, and a'. separately braceloar` to retain said brace bar in bracing position, and means for attaching a conductor at the opposite surface of the body. :An insulator formed of a body portion o insulating material, a pair of spaced Inetallic'parts prjecting from one surface of Isaid body portion providing attaching. means fort'he insulator, a separately formed brace bar extending between said metallic parts adjacent their outer ends having parts telescoping over the projecting portion of said metallic parts, a seat'forming member connected. to the projecting portions of the me 'tallic' parts serving to retain said brace bar in bracing position, and means for attaching a conductor at the opposite surface ofthe body.-.

9.' An'insulator formed of a body'por-- tion yof insulating material, a pair'of spaced metallic parts' projecting from one surface of said body portion providing attaching means lfor the insulator, sleeves formed upon and projecting from said body portion through which said metallic parts extend, said Imetallic parts having flanges adjacent their ends overlying thc ends of said sleeves servi Ig to protect the ends of said sleeves, ineansiconnected to said metallic parts beyon'd the flanges thereon extendingtherebetween Vso as to serve as a seat for the at- 'formed brace bar extending between said metallic parts .and engaging said metallic parts between. said flanges and said seat forming means, and means for attaching a conductor at the opposite surface of the body. n l

' 10. An insulator formed of a' body of insulating materiahspaced strain members projecting from one surface thereof, means 'l forming a seat between them beyond said ends of sai-d sleeves, and means for -attaching a conductor at the opposite surface vof the body.

12. An insulator formed of a4 body por-- tion of insulating material, a pair of spaced metallicj'parts projecting from onesurface of saidbody portion providing lattaching means for the insulator, ameinber extending; between said metallic parts to form a seat beyond'tlie ends thereof for attaching a support, said member being separately formed and being adjustable to form a clamp with ing a conductor lat the opposite surface of the body.

13. Ain insulator formed of a body portion of insulating material, having a pair of sleeves formed integal therewith and projecting from one surface thereof, a pair of spaced metallic pai-ts partly embedded in said body, said metallic parts having end portions projecting outwardly from Athe body through said sleeves.` means extending between and connecting the projecting end portions beyond said sleeves serving as attaching means .for the insulator, an arcing member also extending between and con` ne'cting the projecting end portions beyond said sleeves, said ai'cing member being formed with a plurality of arms thereon projecting laterally outward from 'said sleeves, and means for attaching a conductor at the opposite siii-face of the body.

14.-. An. insulator formed of a body portion of insulating material, having a pair offsleeves formed integral therewith and projecting from one surface thereof, a U- shaped strain member partly embedded in said body portion having its legs project ing outwardly therefrom through said sleeves, means extending between and connecting said legs beyond said sleeves servH ing as attaching means for the insulator, a ilange projecting trom said body portion surrounding said sleeves to protect said sleeves, an arcing member carried by said legs having portions extending outwardly from said legs into proximity to said flange, andy means for attaching a 'conductor at the opposite surface of the body.

l5. Aiin insulator formed of a body portion of insulating material, a pair of spaced metallic parts projecting from one surface of said body portion providing attaching means for the insulator, sleeves forn'ied upon and projecting from said body, portionv through which said metallic parts extend, a member supported at the outer ends of said sleeves comprising` a hood having parts extending over thev insulator body to protect said body, andineans for attaching a con ductor at the opposite surface of the body.

16. An insulator formed of a' body portion of insulating material, a pair of spaced metallic parts projecting from one surface of said body portion providing attaching means for tl e insulator, sleeves formed upon and projecting from said body Aportion through which said metallic parts extend, a. hood shaped arcing member supported at the. outer ends of said sleeves spaced from the insulator body having parts extending over the insulator body .to protect said body, anc means for attaching a condoctor at the opposite surface of the body.

17. An insulator formed of a body portiony of insulating material, a pair of spaced metallic parts projecting from one surface of said body portion providing attachingmeans for the insulator, sleeves formed upon and projecting from said body portion through which said metallic partsextend, a hood shaped arcinlo,Y member supported at the outer ends ot' said sleeves having parts extendingover the insulator body and depending thereabout so that the insulator bodyI is nested within said hood shaped arcing member, and means for attaching a conductor at the opposite surface of the body.

1S. An insulator formed of a body portion of insulating material, having' a pair of sleeves formed integral therewith and projecting' from one surface thereof, a U-shapcd strain member partly embedded in said body portion having its legs projecting outwardly therefrom through said sleeves, means etrtending between and connecting said beyond said sleeves serving as attaching means for the insulator, an arcing member also extending between and connectingl .aid

legs beyond said sleeves, said arcing meary ber having portions bent laterally against the sides of said sleeves to protect said sleeves, and means for attachinga conductor at the opposite suriiace of the body.

it). An insulator formed or a body portion of insulatinT material, strain members projecting` from opposite sides thereof, and pair ot' arcing members carried one by e of said strain members havingn pam" proie ing` laterally .outward from said stro 'n u i bers, ani. the laterally projec'tinf? parts of the areing` member at one side oli said in oulator body having oi'lter end portions bent away from the outer end portions oit the arcmg' member at the other side of the insulator body.

20. A disk insulator formed oli a dishshaped body-@portion o'll insulating' material having reduced extensions projecting from opposite surfaces thereof, 'attachinf;` means projecting from said extensions, and arcing members supported upon said extensions.

21. A dist; insulator formed of diskshaped body portion oii insulating material having reduced extensions projecting` from opposite surfaces thereof, attaching means projecting from said extensions,v and arc- 'conductors at the opposite sides of said body, a pair of arcing members arranged one at each side of said body, and the arcmg member at one side of the body having. arts thereof c isposed for receiving the arc ing curved away from the corresponding portion of the arc/ing member at the other side of the body.

Ain insulator formed of a body portion i ot insulating material, a pair of spaced metallic parts projecting from one surfacer of said body portion providing attaching means vr'or the insulator, means for attaching 21,70 conductor at the opposite surface of the body portion, sleems 'formed upon and projecting troni said body portion through which, said. metallic parts extend, brace bar exl tending between saidmetallic partsgadjacent the outer ends of said slee\'fes, and said brace bar haring a plurality of arms formed thereon projecting outwardly away from said me tallirl parts, said arms being bendable for the purpose set forth.

let.. An insulator toi-med ot' a body portion olt insalutino` material, strain members pro- -gc'tinff from opposite sides thereot,I a pair ot arcine, members one carried by each of said strain members spaced from said body portion, and one ot said arcine members up; portions bendabl'e 'tiru'ard and away "l, m the other oii said arcing members.

An insulator -iormed of' a. body ortion ot insulating; materia., strain mem rs projecting :trom opposite sides thereof, apair arcing members carried by said strain members having parts projecting laterally outward from said strain men'1bers,one of said arcinf;` members comprising a hood for protecting' the insulator body, and the other of said arcing membershaving parts bendable toward and away trom said hood.

ln testimony whereof, I affix my signature in the presence ot two witnesses.

LOU .iS STEINBERGER.

Witnesse L. (iizssroun Harrold Luo M. lrsimnnno. 

